Selectors, radio and the first dance floors
The modern DJ has three ancestors. Radio gave the job its name and its voice. Jamaica's sound systems gave it power: the selector choosing records for a dancing crowd, the operator sculpting bass, exclusivity as weaponry — the first culture where the person playing records, not performing them, was the star. And Britain's Northern soul all-nighters gave it the collector-curator model: DJs famous for what they had found, not what they said. By the early 1970s the raw materials existed; New York assembled them.
The two New York revolutions
Disco's DJs — Francis Grasso is the customary first credit — invented beatmatching and the continuous mix: the idea that a night should be one long piece of music, engineered for a floor's rising energy. Meanwhile in the Bronx, Kool Herc's merry-go-round — looping the drum break between two copies of the same record — created the break-centred style from which hip hop grew, and Grand Wizzard Theodore's scratch turned the turntable fully into an instrument. Between them, those scenes defined the DJ's two poles: the journey-builder and the performer-virtuoso. Every DJ since works somewhere on that line.
Rave, superstars and the digital reset
Britain's rave explosion scaled DJing into an industry — the 90s superclub era minted the superstar DJ, with international fees and magazine covers — and then digital tore up the entry requirements: Final Scratch, Serato, CDJs and controllers replaced crates, and streaming replaced record shops. The craft's centre of gravity shifted from access to records (once the moat) toward selection and reading the room, which were always the real skill. That story — where the reset has left the culture, for better and worse — is the subject of this series' final essay.